X4 Pharmaceuticals Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqCM:XFOR Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
12 Aug 26	SellUS$109,228	John Volpone	Individual	24,576	US$4.44
12 Aug 26	SellUS$210,829	Adam Craig	Individual	47,436	US$4.44
30 Jun 26	SellUS$36,428	David Kirske	Individual	8,543	US$4.26
12 May 26	SellUS$72,820	David Kirske	Individual	16,961	US$4.29
27 Oct 25	BuyUS$2,900,000	NEA 18 Venture Growth Equity, L.P.	Company	1,000,000	US$2.90
23 Oct 25	BuyUS$249,997	Adam Craig	Individual	86,206	US$2.90

Insider Trading Volume

Insider Buying: XFOR insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of XFOR?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	661,567	0.64%
Hedge Funds	13,903,934	13.4%
VC/PE Firms	21,779,702	21.1%
Institutions	67,091,649	64.9%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 341.6%.

Top Shareholders

Top 25 shareholders own 99.48% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
9.51%	Morgan Stanley Investment Management Inc.	9,424,997	US$33.0m	-0.19%	0.03%
8.39%	FMR LLC	8,321,657	US$29.1m	2.69%	no data
8.04%	Bain Capital Life Sciences Investors, LLC	7,967,454	US$27.9m	0%	1.76%
8%	Perceptive Advisors LLC	7,933,491	US$27.8m	17.8%	0.43%
7.03%	Saturn V Capital Management LP	6,973,343	US$24.4m	8%	3.36%
6.99%	Empery Asset Management, LP	6,930,591	US$24.3m	-22.5%	31.64%
5.93%	Deep Track Capital, LP	5,878,757	US$20.6m	-7.27%	0.28%
5.6%	BlackRock, Inc.	5,554,906	US$19.4m	358%	no data
4.32%	Vanguard Capital Management, LLC	4,287,897	US$15.0m	7.78%	no data
3.75%	Kalehua Capital Management LLC	3,722,840	US$13.0m	0%	8.77%
3.26%	New Enterprise Associates, Inc.	3,233,743	US$11.3m	0%	0.7%
3.24%	Rosalind Advisors, Inc.	3,214,766	US$11.3m	0%	3.69%
2.95%	Braidwell LP	2,922,754	US$10.2m	-10.7%	0.36%
2.71%	Blackstone Alternative Asset Management L.P.	2,681,922	US$9.4m	0%	0.67%
2.71%	Blackstone Alternative Investment Advisors LLC	2,681,922	US$9.4m	-173,000%	0.49%
2.59%	Trails Edge Capital Partners, LP	2,571,478	US$9.0m	0%	1.26%
2.47%	Nantahala Capital Management, LLC	2,449,468	US$8.6m	0%	0.48%
2.25%	BVF Partners L.P.	2,233,742	US$7.8m	0%	0.21%
2.12%	Geode Capital Management, LLC	2,098,047	US$7.3m	123%	no data
1.95%	VR Management, LLC	1,934,253	US$6.8m	485%	0.25%
1.41%	Samsara BioCapital LLC	1,395,587	US$4.9m	-23.9%	0.4%
1.31%	State Street Investment Management	1,296,017	US$4.5m	221%	no data
1.01%	Woodline Partners LP	1,001,095	US$3.5m	0%	0.01%
1.01%	Coastlands Capital LP	999,709	US$3.5m	0%	no data
0.92%	The Goldman Sachs Group, Inc.	916,536	US$3.2m	3.9%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/09/13 05:16
End of Day Share Price	2026/09/11 00:00
Earnings	2026/06/30
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

X4 Pharmaceuticals, Inc. is covered by 10 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Leah Rush Cann	Brookline Capital Markets
Arlinda Lee	Canaccord Genuity
Michael Schmidt	Guggenheim Securities, LLC